build(deps): bump setuptools from 75.4.0 to 75.5.0 in /docs (#2387)

Bumps [setuptools](https://github.com/pypa/setuptools) from 75.4.0 to 75.5.0.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](https://github.com/pypa/setuptools/compare/v75.4.0...v75.5.0)

---
updated-dependencies:
- dependency-name: setuptools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -1,5 +1,5 @@
 readthedocs-sphinx-search==0.3.2
-setuptools==75.4.0
+setuptools==75.5.0
 Sphinx==8.1.3
 sphinx-copybutton==0.5.2
 sphinx_rtd_theme==3.0.1